B 18a

Flyable, self-powered 18” touring subwoofer – integrates perfectly with ARES 8 line arrays

TransducersLF : 1 x 18″
SPL peak / 1m (measured)132 dB
Weight55kg / 121.25lbs
RiggingFrom 0 to 10°
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B 18a is a compact, high-performance self-powered touring subwoofer, providing the perfect companion to the AUDIOFOCUS ARES 8 series in standalone, stacked, or flown configurations.

The subwoofer houses a long excursion 18″ neodymium driver and combines front diffusion, bass reflex, and transmission line design for ultimate efficiency and performance.

B 18a features an advanced AUDIOFOCUS Class D amplifier module with integral DSP and dedicated presets. Presets include omni, cardio (Front-Back) and end fire variants.

B 18a is built with pride in Belgium and coated in tough, weather-resistant polyurea to safeguard your investment. The cabinet front is protected by a rigid metal grill, backed by acoustically transparent foam. The subwoofer is supplied with integral rigging and is fully compatible with ARES 8’s rigging system.


  • Bass or low-mid extension for ARES 8 series
  • Flown or ground stacked
  • Pole mount socket
  • Self-powered plug ‘n play
  • Integrated rigging
  • 2 presets

Technical specifications

DescriptionSelf-powered bass reinforcement cabinet
Transducers LF: 1 x 18″
Frequency range (-6dB)55Hz-100Hz
SPL peak (1)132 dB
ProcessingDedicated AUDIOFOCUS SCiO presets
Rigging20 different inter-cabinet angle positions, from 0 to 10°
Audio ConnectorsIN: 1×3-point XLR
LINK: 1×3-point XLR
Cloud Power-DANTE/AVB connectors2 x etherCON
Power ConnectorsIN: 1×3-point powerCON
LINK: 1×3-point powerCON

Dimensions (H x W x D)510 x 650 x 705 mm
20.07 x 25.59 x 27.75 inches
Weight55kg / 121.25lbs
FinishHighly resistant polyurea coating

CabinetHigh grade birch plywood

(1) Peak level measured at 1 m under free field conditions using pink noise with crest factor 5